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0b8b2668f9
In time-travel mode userspace can do a lot of work without any time passing. Unfortunately, this can result in OOM situations as the RCU core code will never be run. Work around this by keeping track of userspace processes that do not yield for a lot of operations. When this happens, insert a jiffie into the sched_clock clock to account time against the process and cause the bookkeeping to run. As sched_clock is used for tracing, it is useful to keep it in sync between the different VMs. As such, try to remove added ticks again when the actual clock ticks. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20241010142537.1134685-1-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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